CN111255924A - Pneumatic combination valve for prolonging service life of molecular sieve oxygen generation system - Google Patents
Pneumatic combination valve for prolonging service life of molecular sieve oxygen generation system Download PDFInfo
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- CN111255924A CN111255924A CN202010176987.8A CN202010176987A CN111255924A CN 111255924 A CN111255924 A CN 111255924A CN 202010176987 A CN202010176987 A CN 202010176987A CN 111255924 A CN111255924 A CN 111255924A
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- molecular sieve
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- generation system
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- 239000002808 molecular sieve Substances 0.000 title claims abstract description 54
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 title claims abstract description 54
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000001301 oxygen Substances 0.000 title claims abstract description 36
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 36
- 239000007789 gas Substances 0.000 claims abstract description 30
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 46
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
- F16K11/22—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members with an actuating member for each valve, e.g. interconnected to form multiple-way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/42—Actuating devices; Operating means; Releasing devices actuated by fluid by means of electrically-actuated members in the supply or discharge conduits of the fluid motor
- F16K31/423—Actuating devices; Operating means; Releasing devices actuated by fluid by means of electrically-actuated members in the supply or discharge conduits of the fluid motor the actuated members consisting of multiple way valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The invention discloses a pneumatic combination valve for prolonging the service life of a molecular sieve oxygen generation system, which comprises a pilot electromagnetic valve for controlling and compressing a switch for controlling a gas circuit, a cover plate fixedly arranged below the pilot electromagnetic valve, a valve body fixedly arranged below the cover plate and a push rod assembly arranged in the valve body, wherein the valve body is provided with a gas inlet for inputting air, a gas outlet for discharging nitrogen, and an A port and a B port which are respectively connected with a molecular sieve system; the valve body central region is provided with a containing cavity for containing the push rod assembly, and the lower end of the push rod assembly is provided with a resetting device for enabling the push rod assembly to recover the original position. The technical scheme provided by the invention effectively solves the problem that the molecular sieve of the traditional pneumatic combination valve is directly communicated with the exhaust port, and greatly prolongs the storage life and the service life of the molecular sieve in the molecular sieve oxygen generation system.
Description
Technical Field
The invention relates to the technical field of pneumatic valves, in particular to a pneumatic combination valve for prolonging the service life of a molecular sieve oxygen generation system.
Background
A plurality of household oxygenerators are available in the market, and the use characteristics of the household oxygenerators are different due to different oxygen generation principles. The oxygen generation principle of the household oxygen generator comprises: 1. the principle of the molecular sieve; 2. the principle of a macromolecular oxygen-enriched membrane; 3. water electrolysis principle; 4. chemical reaction oxygen-generating principle. The molecular sieve oxygen generator is the only mature oxygen generator with international and national standards.
A molecular sieve oxygen production system, also called as a molecular sieve Pressure Swing Adsorption (PSA) oxygen production system, takes environmental air as a raw material by a Pressure Swing Adsorption (PSA) method, and under the conditions of normal temperature and low pressure, utilizes the characteristic that the adsorption capacity of a molecular sieve for nitrogen (adsorbate) in the air is increased when the molecular sieve is pressurized and the adsorption capacity for the nitrogen in the air is reduced when the molecular sieve is depressurized to form a rapid cycle process of pressurized adsorption and depressurized desorption, so that oxygen and nitrogen in the air are separated, carbon dioxide, gaseous acid, other gaseous oxides and the like in the air belong to substances with strong molecular polarity, and the molecular sieve is difficult to pass, so that the purity of the oxygen produced reaches more than 93% v/v.
The scheme of the conventional molecular sieve oxygen generation system comprises a pneumatic combination valve and an oxygen generation assembly, the pneumatic combination valve used on the conventional molecular sieve oxygen generation system is out of work, the molecular sieve in the oxygen generation assembly is in direct contact with the external air through an A port or a B port in the pneumatic combination valve and then through an exhaust port, and the service life of the molecular sieve is greatly shortened under the above conditions.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the pneumatic combination valve for prolonging the service life of the molecular sieve oxygen generation system, solve the problem that the molecular sieve of the traditional pneumatic combination valve is directly communicated with the exhaust port, and greatly prolong the storage life and the service life of the molecular sieve in the molecular sieve oxygen generation system.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the invention provides a pneumatic combination valve for prolonging the service life of a molecular sieve oxygen generation system, which comprises a pilot electromagnetic valve for controlling compression and controlling the opening and closing of a gas circuit, a cover plate fixedly arranged below the pilot electromagnetic valve, a valve body fixedly arranged below the cover plate and a push rod assembly arranged in the valve body, wherein the valve body is provided with a gas inlet for inputting air, a gas outlet for discharging nitrogen, and an A port and a B port which are respectively connected with a molecular sieve system; the air inlet, the air outlet, the port A and the port B are all positioned on the side face of the valve body, an accommodating cavity for accommodating a push rod assembly is formed in the central area of the valve body, the accommodating cavity is divided into a first accommodating cavity and a second accommodating cavity by the push rod assembly, the air outlet is communicated with the first accommodating cavity, and the port A and the port B are respectively communicated with the second accommodating cavity; and the lower end of the push rod assembly is provided with a resetting device for restoring the push rod assembly to the original position.
In a further aspect of the above scheme, the return device is a return spring.
According to a further scheme of the scheme, the air inlet, the exhaust port, the port A and the port B are located on the same side face of the valve body.
In a further aspect of the above solution, the air inlet and the air outlet are arranged in parallel and opposite to each other along a horizontal direction, and the air outlet is located above the air inlet; the port A and the port B are oppositely arranged in parallel along the vertical direction, and the port A and the port B are positioned between the exhaust port and the air inlet.
The further scheme of the scheme is that the air inlet and the air outlet are positioned at one side of the valve body, and the air inlet and the air outlet are arranged oppositely and parallelly along the horizontal direction; the port A and the port B are positioned on the other side of the valve body, and the port A and the port B are oppositely arranged in parallel along the vertical direction.
According to a further scheme of the scheme, the push rod assembly comprises a push rod, a support push rod is vertically arranged on a push rod support seat of the accommodating cavity, a sealing cover is arranged on the upper end of the push rod support seat, and a round gasket is arranged below the sealing cover and fixedly connected with the upper end of the push rod, a first spring hole used for accommodating the reset spring is formed in the lower end of the push rod, and a sealing ring is arranged at the joint of the push rod and the support seat.
According to a further scheme of the scheme, a first screw hole is formed in the upper end of the push rod, a second screw hole matched with the first screw hole is formed in the central area of the sealing cover, and the sealing cover is fixed to the upper end of the push rod through the matching of a self-tapping screw and the first screw hole and the second screw hole.
According to a further scheme of the scheme, the push rod support is provided with a push rod through hole matched with the upper end of the push rod; the sealing ring comprises a first sealing ring and a second sealing ring, and the first sealing ring and the second sealing ring are arranged in parallel along the horizontal direction.
According to a further scheme of the scheme, a second spring hole used for containing the other end of the reset spring is formed in the bottom of the containing cavity.
The further scheme of the scheme is that the number of the accommodating cavities is 2, and the number of the push rod assemblies is 2.
Compared with the prior art, the technical scheme of the invention has the following advantages and beneficial effects: the invention provides a pneumatic combination valve for prolonging the service life of a molecular sieve oxygen generation system, which comprises a pilot electromagnetic valve for controlling compression and controlling the opening and closing of a gas circuit, a cover plate fixedly arranged below the pilot electromagnetic valve, a valve body fixedly arranged below the cover plate and a push rod assembly arranged in the valve body, wherein the valve body is provided with a gas inlet for inputting air, a gas outlet for discharging nitrogen, and an A port and a B port which are respectively connected with a molecular sieve system; the air inlet, the air outlet, the port A and the port B are all positioned on the side face of the valve body, an accommodating cavity for accommodating a push rod assembly is formed in the central area of the valve body, the accommodating cavity is divided into a first accommodating cavity and a second accommodating cavity by the push rod assembly, the air outlet is communicated with the first accommodating cavity, and the port A and the port B are respectively communicated with the second accommodating cavity; and the lower end of the push rod assembly is provided with a resetting device for restoring the push rod assembly to the original position. According to the technical scheme provided by the invention, the reset device is arranged below the push rod assembly, so that the push rod assembly is in an original position when the pneumatic combination valve is in an inoperative state, namely the push rod assembly divides the accommodating cavity into the first accommodating cavity and the second accommodating cavity which are not communicated, the problem that the molecular sieve of the traditional pneumatic combination valve is directly communicated with the exhaust port is effectively solved, and the storage life and the service life of the molecular sieve in the molecular sieve oxygen generation system are greatly prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic perspective view of a pneumatic combination valve in an embodiment;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a schematic perspective view of a pneumatic combination valve in another embodiment;
FIG. 4 is a front view of FIG. 3;
FIG. 5 is a rear view of FIG. 3;
fig. 6 is a full sectional view of fig. 1.
In the figure: 1-a pilot electromagnetic valve; 2-cover plate; 4-a valve body; 41-second spring hole; 5-an air inlet; 6-an exhaust port; 7-A port; 8-B port; 20-a containment chamber; 21-a first containing cavity; 22-a second containing cavity; 9-a return spring; 11-self-tapping screws; 31-a push rod support; 32-a first spring hole; 33-sealing ring; 331-a first sealing ring; 332-a second sealing ring; 34-a first screw hole; 35-left push rod; 36-right push rod; 41-a second screw hole; 51-left sealing cover; 52-right side seal cap; 61-left circular gasket; 62-right circular gasket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly. To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.
Examples
As shown in fig. 1-6, the present embodiment provides a pneumatic combination valve for prolonging a service life of a molecular sieve oxygen generation system, including a pilot electromagnetic valve 1 for controlling compression and used for controlling an air circuit switch, a cover plate 2 fixedly disposed below the pilot electromagnetic valve 1 by using bolts, a valve body 4 fixedly disposed below the cover plate 2 by using bolts, and two sets of push rod assemblies movably mounted inside the valve body 4, wherein the valve body 4 is provided with an air inlet 5 for inputting air, an exhaust port 6 for exhausting nitrogen, and an a port 7 and a B port 8 respectively connected to the molecular sieve system, the a port 7 and the B port 8 are used for inputting nitrogen in the molecular sieve system into the valve body 4 of the pneumatic combination valve, and the nitrogen is exhausted from the exhaust port 6 through an air channel in the valve body 4; the air inlet 5, the air outlet 6, the port A7 and the port B8 are all located on the side face of the valve body 4, an accommodating cavity 20 for accommodating a push rod assembly is formed in the central area of the valve body 4, the accommodating cavity 20 is divided into a first accommodating cavity 21 and a second accommodating cavity 22 by the push rod assembly, the air outlet 6 is communicated with the first accommodating cavity 21, and the port A7 and the port B8 are respectively communicated with the second accommodating cavity 22; push rod subassembly lower extreme is provided with the resetting means who is used for making push rod subassembly resume the normal position, preferably reset spring 9 in this embodiment for pneumatic combination valve is under inoperative state, and push rod subassembly is in primary position through setting up resetting means in push rod subassembly below: the push rod subassembly will hold the first chamber 21 and the second chamber 22 that holds that the chamber 20 is cut apart into the nonconducting promptly to make and hold A mouth 7 and B mouth 8 and the gas vent 6 nonconducting that the chamber 22 communicates with the second, and then effectively solved the problem that traditional pneumatic combination valve molecular sieve and gas vent 6 directly communicate, prolonged molecular sieve's in the molecular sieve system of producing oxygen deposit life and life by a wide margin.
In this embodiment, the inlet port 5, the outlet port 6, the port a 7, and the port B8 are located on the same side of the valve body 4, such as the front side as shown in fig. 1.
In order to make the arrangement appearance of the air inlet 5, the air outlet 6, the port a 7 and the port B8 more beautiful, preferably, the air inlet 5 and the air outlet 6 are arranged in parallel and opposite to each other along the horizontal direction, and the air outlet 6 is positioned above the air inlet 5; the port A7 and the port B8 are oppositely arranged in parallel along the vertical direction, and the port A7 and the port B8 are positioned between the exhaust port 6 and the air inlet 5.
In other embodiments, as shown in fig. 3 to 5, the air inlet 5 and the air outlet 6 are located on the front side of the valve body 4, and the air inlet 5 and the air outlet 6 are arranged in parallel and opposite to each other in a horizontal direction; the port A7 and the port B8 are located on the rear side of the valve body 4, and specifically, the port A7 and the port B8 are oppositely arranged in parallel along the vertical direction.
In this embodiment, the push rod assembly includes a push rod, a push rod support 31 for supporting the push rod to be vertically arranged in the accommodating cavity 20, a sealing cover arranged on the upper end of the push rod support 31, and a circular gasket located below the sealing cover and fixedly connected to the upper end of the push rod, a first spring hole 32 for accommodating the return spring 9 is provided at the lower end of the push rod, and a sealing ring 33 is provided at the joint of the push rod and the push rod support 31.
The push rod is used for realizing communication and isolation of the first accommodating cavity 21 and the second accommodating cavity 22. When the pneumatic combination valve works, compressed air acts on the sealing cover and the round gasket to push the push rod to move downwards, so that the sealing ring 33 is separated from the lower end of the push rod support 31, and the communication between the first accommodating cavity 21 and the second accommodating cavity 22 is realized; when the pneumatic combination valve does not work, the push rod is under the action of the return spring 9, the sealing ring 33 on the push rod is in sealing butt joint with the lower end of the push rod support 31, the first accommodating cavity 21 and the second accommodating cavity 22 are isolated, and therefore the communication between the port A7 and the port B8 and the exhaust hole is blocked.
The push rod support 31 is used for supporting the push rod to reciprocate along the vertical direction, so that the push rod can stably realize reciprocating motion in a preset direction; the sealing cover is used for applying thrust to the round gasket; the round gasket is used for transmitting thrust to the push rod to push the push rod to move downwards.
Through setting up first spring hole 32, realize reset spring 9 and push rod's being connected, make things convenient for push rod and reset spring 9's installation and being connected, effectively promoted pneumatic combination valve's installation effectiveness.
This embodiment does not limit the fixed connection mode of sealed lid and push rod, and is preferred, first screw hole 34 has been seted up to the push rod upper end, sealed lid central area set up with first screw hole 34 matched with second screw hole (not shown in the figure), sealed lid is fixed in through self-tapping screw 11 and the cooperation of first screw hole 34 and second screw hole the upper end of push rod.
In this embodiment, the push rod support 31 is provided with a push rod through hole (not shown in the figure) matching with the upper end of the push rod; the sealing ring 33 includes a first sealing ring 331 and a second sealing ring 332, the first sealing ring 331 and the second sealing ring 332 are arranged in parallel along a horizontal direction, and the first sealing ring 331 is located below the second sealing ring 332.
In this embodiment, hold the chamber 20 bottom and offer the second spring hole 41 that is used for holding the reset spring 9 other end, set up second spring hole 41, through the connected mode of spring hole block, make things convenient for reset spring 9's installation, be favorable to promoting the equipment or the installation effectiveness of pneumatic combination valve.
The working principle of the pneumatic combination valve provided by the embodiment is as follows:
air enters the valve body 4 through the air inlet 5 and enters the cover plate 2 and the pilot electromagnetic valve 1 through a gas channel inside the valve body 4. If the left position of the pilot electromagnetic valve 1 is electrified, a left position gas channel of the pilot electromagnetic valve 1 is opened, air enters a gas channel in the cover plate 2 through the pilot electromagnetic valve 1, the air applies pressure to a left side sealing cover 51, the left side sealing cover 51 deforms downwards to push a left side round gasket 61 to move downwards, and further push a left side push rod 35 to move downwards, at the moment, a port B8 is opened, the air enters one side of the molecular sieve system through the port B8, meanwhile, nitrogen in the other side of the molecular sieve system enters a valve body 4 of the pneumatic combination valve through a port A7 and enters an exhaust port 6 through a gas channel in the valve body 4 to be exhausted;
if the right position of the pilot electromagnetic valve 1 is electrified, the right position gas channel of the pilot electromagnetic valve 1 is opened, air enters the gas channel in the cover plate 2 through the pilot electromagnetic valve 1, the air applies pressure to the right sealing cover 52, the right sealing cover 52 deforms downwards to push the right round gasket 62 to move downwards, and then the right push rod 36 is pushed to move downwards, at the moment, the A port 7 is opened, the air enters the other side of the molecular sieve system through the A port 7, meanwhile, nitrogen in the other side of the molecular sieve system enters the valve body 4 of the pneumatic combination valve through the B port 8, and enters the exhaust port 6 through the gas channel in the valve body 4 to be exhausted.
When the pneumatic combination valve is out of work, no gas circulates in the pneumatic combination valve, the sealing cover, the round gasket and the push rod are all located original positions, under the upward thrust action of the reset spring 9, the sealing ring 33 on the push rod is in sealing butt joint with the lower end of the push rod support 31, the first cavity 21 and the second cavity 22 are kept apart, the A port 7 and the B port 8 are further kept apart from the exhaust port 6, the problem of the scheme that the exhaust end of the molecular sieve cylinder is communicated with the air end is solved, and the storage life and the service life of the molecular sieve system are greatly prolonged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A pneumatic combination valve for prolonging the service life of a molecular sieve oxygen generation system is characterized by comprising a pilot electromagnetic valve for controlling compression and controlling a gas circuit switch, a cover plate fixedly arranged below the pilot electromagnetic valve, a valve body fixedly arranged below the cover plate and a push rod assembly arranged in the valve body, wherein the valve body is provided with a gas inlet for inputting air, a gas outlet for discharging nitrogen, and an A port and a B port which are respectively connected with a molecular sieve system; the air inlet, the air outlet, the port A and the port B are all positioned on the side face of the valve body, an accommodating cavity for accommodating a push rod assembly is formed in the central area of the valve body, the accommodating cavity is divided into a first accommodating cavity and a second accommodating cavity by the push rod assembly, the air outlet is communicated with the first accommodating cavity, and the port A and the port B are respectively communicated with the second accommodating cavity; and the lower end of the push rod assembly is provided with a resetting device for restoring the push rod assembly to the original position.
2. The pneumatically operated combination valve for extending the service life of a molecular sieve oxygen generation system of claim 1, wherein the return device is a return spring.
3. The pneumatically actuated combination valve for extending the service life of a molecular sieve oxygen generation system of claim 1, wherein the inlet port, the exhaust port, port a and port B are located on the same side of the valve body.
4. The pneumatically operated combination valve for extending the service life of an oxygen generation system of molecular sieve of claim 3 wherein said gas inlet is horizontally parallel to and opposite said gas outlet, said gas outlet being above said gas inlet; the port A and the port B are oppositely arranged in parallel along the vertical direction, and the port A and the port B are positioned between the exhaust port and the air inlet.
5. The pneumatically operated combination valve for extending the service life of a molecular sieve oxygen generation system of claim 1, wherein the gas inlet and the gas outlet are located on one side of the valve body, the gas inlet and the gas outlet being horizontally disposed in parallel opposition; the port A and the port B are positioned on the other side of the valve body, and the port A and the port B are oppositely arranged in parallel along the vertical direction.
6. The pneumatic combination valve for prolonging the service life of the molecular sieve oxygen generation system according to claim 1, wherein the push rod assembly comprises a push rod, a push rod support for supporting the push rod to be vertically arranged in the accommodating cavity, a sealing cover arranged at the upper end of the push rod support, and a round gasket which is positioned below the sealing cover and fixedly connected with the upper end of the push rod, a first spring hole for accommodating the reset spring is formed at the lower end of the push rod, and a sealing ring is arranged at the joint of the push rod and the push rod support.
7. The pneumatic combination valve for prolonging the service life of an oxygen generation system with molecular sieves as in claim 6, wherein the upper end of the push rod is provided with a first screw hole, the central region of the sealing cover is provided with a second screw hole matched with the first screw hole, and the sealing cover is fixed on the upper end of the push rod through the matching of a self-tapping screw and the first screw hole and the second screw hole.
8. The pneumatic combination valve for prolonging the service life of the molecular sieve oxygen generation system as claimed in claim 7, wherein the push rod support is provided with a push rod through hole matched with the upper end of the push rod; the sealing ring comprises a first sealing ring and a second sealing ring, and the first sealing ring and the second sealing ring are arranged in parallel along the horizontal direction.
9. The pneumatic combination valve for prolonging the service life of the molecular sieve oxygen generation system of claim 8, wherein the bottom of the accommodating cavity is provided with a second spring hole for accommodating the other end of the return spring.
10. The pneumatically actuated combination valve for extending the service life of a molecular sieve oxygen generation system of claim 9 wherein the number of said holding chambers is 2 and the number of said push rod assemblies is 2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010176987.8A CN111255924A (en) | 2020-03-13 | 2020-03-13 | Pneumatic combination valve for prolonging service life of molecular sieve oxygen generation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010176987.8A CN111255924A (en) | 2020-03-13 | 2020-03-13 | Pneumatic combination valve for prolonging service life of molecular sieve oxygen generation system |
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| CN111255924A true CN111255924A (en) | 2020-06-09 |
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| CN202010176987.8A Pending CN111255924A (en) | 2020-03-13 | 2020-03-13 | Pneumatic combination valve for prolonging service life of molecular sieve oxygen generation system |
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- 2020-03-13 CN CN202010176987.8A patent/CN111255924A/en active Pending
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